1,013
edits
Project:Pi-Power topping board: Difference between revisions
From London Hackspace Wiki
Project:Pi-Power topping board (view source)
Revision as of 02:49, 6 November 2012
, 6 November 2012no edit summary
mNo edit summary |
mNo edit summary |
||
| Line 34: | Line 34: | ||
==Charge/power controllers== | ==Charge/power controllers== | ||
===LTC4156=== | |||
* Pro | |||
** I2C/SMBus Control and Status Feedback | |||
** Dual input | |||
* Con | |||
** Both inputs 5v | |||
** LiFePO4 batteries only | |||
===LTC4155=== | |||
* Pro | |||
** Dual input | |||
** I2C/SMBus Control and Status Feedback | |||
** PowerPath allows instant-on while charging | |||
** Up to 3A input from wall adaptor | |||
* Con | |||
** Both inputs 5v | |||
===LTC4098=== | |||
* Pro | |||
** Dual input | |||
** Designed to operate from USB 5v and 30v external inputs | |||
** High efficiency ~93% | |||
* Con | |||
** <30v external input requires external LT3653 chip (seems to put out 5v, so could be used on other chips? 1.2A), lowering charging efficiency (80-86%) | |||
** No I2C | |||
==Switching regulators== | ==Switching regulators== | ||
Initial findings presuming 800mA-1000mA per output. | Initial findings presuming 800mA-1000mA per output. I2C less important here if power controller can monitor current use. | ||
===Single output=== | ===Single output=== | ||
===Dual output=== | ===Dual output=== | ||
====LTC3417==== | |||
* Pro | |||
** 2.25V to 5.5V input | |||
** 1.4A output | |||
** 95% efficient | |||
* Con | |||
** No I2C, only power-good logic output pin | |||
===Triple output=== | ===Triple output=== | ||
====ADP5020==== | |||
600, 250 and 150mA outputs. Up to 93% efficiency. | |||
I2C appears for control, not monitoring. | |||
